From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vicent Roca Daniel Date: Wed, 29 Oct 2003 22:11:14 +0000 Subject: Re: [LARTC] Data rate accuracy started failing. Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: lartc@vger.kernel.org Peteris Krumins wrote: > Dear all, > > I am an experienced unix administrator and a long time ago (1+ year) > I made traffic-shaping system for an ISP (~400 clients). > > Each ip address requires 4 classes - > 2 for incoming (internet->client), one for international traffic, > the other for local-country and border-country traffic. > and > 2 for outgoing (client->internet), for the same purposes. > > Everything worked ok until last week, when more clients > were added. The data rate (rate NNkbit) is no longer stable - > sometimes it exceeds the rate specified and sometimes > there is starvation. And no, there is still planty of traffic > left, so its not a problem of bandwidth capacity. > > The technique used is htb + sfq for traffic exceeding 0.8mbit/s, > for traffics up to 0.8mbit/s as it is not cpu-intensive > (but depends on HZ for calculations) > > Are there any limits I am not aware of? It seems that everything > works ok again if I remove some addresses (single address /32 or > larger networks). I am not sure which part fails, filtering > or actual shaping. > > And, it is vanilla Linux 2.4.20 with qos services coming with > it. > > Also, i never came up with the other question: there has always > been problem with tbf. For example, rate 256kbit is specified but the > actual rate never exceeds 230 - 250kbit, so I add 30kbit for each > rate (so 256 becoms 286kbit) so client got exactly his 256kbit. >=20 > >thanks, >P.Krumins > >_______________________________________________ >LARTC mailing list / LARTC@mailman.ds9a.nl >http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/ > > =20 > Hi! mmm I'm new in the forum.. but, =BFcan you paste your scripts? I wanna do something like your traffic-shaping system. Sorry for my English, I'm from Spain. _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/